Locking device foe dooes



(No Model.)

- 2 Sheets-Sheet; 1. E. KOLB. LOOKING DEVICE FOR DOORS.

No. 591,850. Patented Oct. 19,1897.

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LOCKING DEVICE FOR DOORS.

No. 591,850. Patented Oct. 19,1897.

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UNITED STATES PATENT @FFICE.

EDWIN KOLB, OF ST. LOUIS, MISSOURI, ASSIGNOR TO THE PAULY JAIL BUILDING AND MANUFACTURING COMPANY, OF SAME PLACE.

LOCKING DEVICE FOR DOORS.

SPEGIFICATION forming part of Letters Patent No. 591,850, dated October 19, 1897.

Application filed December 11, 1896. Serial No. 615,348. (No model.)

in the State of Missouri, have invented certain newand useful Improvements in Looking Devices for Jail and Similar Doors, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention has relation to improvements in looking devices for sliding jail-doors; and it consists in the novel arrangement and combination of parts more fully set forth in the specification and pointed out in the claims.

In the drawings, Figure 1 is an elevation of a portion of a cell, showing the door closed and my attachment applied thereto. Fig. 2 is a similar view showing the door open and the cooperating parts in position to correspond with the open position of the door. Fig. 3 is a detail section on 0: 0c of Fig. 2, and Fig. 4 is a front view of the locking-bar at the point where it cooperates with the locking-lug.

The object of my invention is to construct alocking device for sliding jail-doors,wherein a maximum amount of travel can be imparted to the door for a given throw of the operating-lever by which the closing and opening of the door is effected, this desirable result being attained without the necessity of any material reduction in the leverage of the operating-lever, and without the production of any noticeable amount of friction among the several mechanical elements of which the present device is composed.

A further object is to construct a locking device by which several doors can be opera ted or controlled simultaneously by the same lever.

A further object is to provide means whereby the locking device and the shifting mechanism for the door operate independently of one another.

The invention presents advantages apparent froma detailed description thereof, which is as follows:

Referring to the drawings, 1 represents a sliding door carried by rollers 2, adapted to ride on the ledge 3, as is usual in this class of jail-doors. Pivoted to the end of a projecting arm 4, carried by the wall of the cell, is a bent lever 5, whose long arm is provided with a laterally-projecting pin 6, adapted to engage suitable notches 7 8, formed along the lower surface of a pivoted latch 9, whereby the lever can be locked in either one of two positions, said lever being adapted to oper-, ate the locking device, as will presently appear. The free end of the short arm-of the bent lever 5 has pivotally connected thereto the lower end of a link 10, whose upper end is pivotally connected to the free end of one arm of a bell-crank lever 11, carried by the cell-wall, the free end of the opposite arm of said bell-crank being pivotally connected to one end of a second link 12. The opposite end of this link is pivotally-secured to the free end of one arm of a second bell-crank lever 13, the free end of whose opposite arm is pivotally secured to the upper end of the locking-bar 14, the latter being provided at one end (lower in this case) as usual with a slit or opening 15, with the Wall of one end of which the lug 16, carried by the door, is adapted to engage when the door is closed;

thereby preventing the opening of the latter when the locking-bar is in one of its extreme positions. (Lowest position in the present case.) Passing loosely through an opening formed at the upper extremity of the lockingbar is the forward end of a-coupling-bar 17, whose opposite or rear end is pivotally secured to the medial or connecting pivot of the toggle-links 18 19, the extremity of one toggle 18 being pivotally connected to the wall or ceiling of the cell, and the extremity of the opposite link 19 being pivotally connected to the jail-door along the upper edge thereof. Carried by the side of the coupling-bar 17 in proximity to the upper end of the locking-bar is a lug or short arm 20 which is adapted, under circumstances to be presently referred to, to

engage a corresponding depression 21, formed thrown or swung downwardly (upon its release from the notch 7) and made to engage the notch 8 of the latch 9, as seen in Fig. 2, the several connecting-links and bell-crank levers move in the direction indicated by the arrows in Fig. 1, raising the locking-bar, and causing it to bring the lug 20 of the couplingbar into engagement with the notch 21 of the travel-bar, and bring the slit l5 opposite the lug 16. The door is now in position to be opened, and this is accomplished by the following mechanism: Pivoted to the projecting arm or bracket 24, carried by the cell-wall, is a door-controlling lever 25, the short arm of which assumes, preferably, the shape of a toothed quadrant or are 26, the teeth of which mesh with the lower toothed edge of the forward end of the travel-bar. When, therefore, the controlling-lever 25 is tilted or swung in the direction as shown by the arrow in Fig. 1, it will force the travel-bar as indicated, which travel-bar, coupled as it is to the coupling-bar, will carry the latter with it in the same direction; but as the coupling-bar is connected to the pivotal pin of the togglelinks 18 19, it will cause them to first contract to accommodate themselves to the shortest distance from one another of the pivots between which their extreme ends are pivoted, and then upon further movement of the travel-bar, the toggle-links will expand into the position indicated in Fig. 2, carrying the door with them and opening the same to its full extent. To close the door, of course the reverse of these operations takes place, and to lock the door, the operating-lever 5 is restored to its original position into engagement with the notch 7 of the latch 9. It will be seen that with a maximum leverage, and yet with a minimum amount of .throw of the short arm of the door-controlling lever 25, a maximum amount of travel is imparted to the door, or series of doors that may be coupled to the travel-bar. This result is due to the toggle connection between the door and the travel-bar.

As seen from the foregoing, the door-controlling lever 25 operates independently of the operating-lever 5 of the locking device, the latter lever serving to couple the door to the travel-bar, which is actuated by the controlling-lever.

It is apparent of course that minor changes might be made in details without departing from the spirit of my invention.

Having described my invention, What I claim is- 1. In a door and locking device therefor, a suitable sliding door, a suitable travel-bar normally disconnected from the door, means for effecting temporary connection between the door and travel-bar, and devices for shifting the travel-bar and door connected thereto, substantially as set forth.

2. In a door and locking device therefor, a suitable sliding door, a locking-bar for the same, a suitable travel-bar normally disconnected from the door, means for effecting temporary connection between the door and travel-bar and simultaneously disengaging the locking-bar from the door, and suitable means for shifting the travel-bar and door connected thereto, substantially as set forth.

3. In a door and locking device therefor, a suitable sliding door, a locking'bar for the same, a suitable travel-bar, means for effecting temporary connection between the door and travel-bar for one position of the lockingbar, and disconnecting the travel-bar for another position of the locking-bar, and suitable means for shifting the travel-bar and door when connected, substantially as set forth.

4. In a door and locking device therefor, a sliding door, a suitable travel-bar, togglelinks between the door and the wall of the cell by which the door is carried, a locking-bar for the door, means for effecting connection between the toggle-links and travel-bar for one position of the locking-bar, and means for shifting the travel-bar and door when connected, substantially as set forth. 7

5. In a door and locking device therefor, a sliding door, a suitable travel-bar, togglelinks having one extremity connected to the door, and the other to the wall carrying the door, a coupling-bar having one end pivotally connected to the toggle-links, an operatinglever for actuating the opposite end of the coupling-bar and adapted alternately to effect connection between it and the travel-bar and then disconnect the same from said travelbar, and means for shifting the travel-bar, substantially as set forth.

6. In a door and locking device therefor, a sliding door, a suitable travel-bar, togglelinks having one extremity connected to the door, and the other to the wall on which the door is disposed, a coupling-bar having one end pivotally connected to the toggle-links, a locking-bar for the door, the opposite or free end ofthe coupling-bar being carried by said locking-bar, an operating-lever for actuating the locking-bar and effecting, for one position of said locking-bar, positive connection between the coupling-bar and travel-bar, and disengaging the said coupling-bar from the travel-bar for another position of the locking-bar, and suitable devices for shifting the travel-bar, substantially as set forth.

7. In a door and locking device therefor,

a sliding door, a locking-bar for the same,

toggle-links connected respectively with the door and the wall along which the door is disposed, a coupling-bar interposed between the toggle-links and the locking-bar, said coupling-bar being adapted to effect connection between the toggle-links and travel-bar for one position of the locking-bar, and disconnect said parts for another position of the locking-bar, an operating-lever carried by the wall of the cell, and intermediate connecting links and levers between the actuating-lever and the locking-bar for moving the latter for effecting the coupling or uncoupling referred ICC to between the travel-bar and coupling-bar, substantially as set forth.

8. In a door and locking device therefor, a sliding door, toggle-links connected respectively to the door and to the wall along which the same is mounted, a sliding travel-bar mounted in proximity to the links and door, a locking-bar for the door, a coupling-bar having one end pivoted to the pivotal pin connecting the toggle-links, and the other end passing through a suitable opening formed in the locking-bar, a lug carried by the coupling-bar, and adapted upon the movement of the locking-bar to one of its extreme positions to engage a depression formed in the travelbar for its reception, suitable means for 210- EDWIN KOLB.

lVitnesses: 1 EMIL STAREK, ALFRED A. MATHEY. 

